CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2022	Dec. 31, 2021
SHAREHOLDERS' EQUITY:
Preferred shares, no par value (in dollars per share)	$ 0	$ 0
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Preferred Stock, Shares Outstanding	0	0
Common shares, no par value (in dollars per share)	$ 0	$ 0
Common Stock, Shares Authorized	19,000,000	19,000,000
Common Stock, Shares, Issued	14,258,074	14,213,792
Treasury Stock, Shares	2,883,559	1,798,836
Common stock, shares, outstanding (in shares)	11,374,515	12,414,956